Syntheses and structures of dimeric sodium and potassium complexes of 2,6-diisopropyl-Anilidophosphine borane ligand

Naktode, K and Bhattacharjee, J and Chakrabarti, A and Panda, Tarun K (2015) Syntheses and structures of dimeric sodium and potassium complexes of 2,6-diisopropyl-Anilidophosphine borane ligand. Journal of Chemical Sciences, 127 (2). pp. 265-272. ISSN 0974-3626

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We report here the syntheses and structural studies of dimeric sodium and potassium complexes of composition [Na(THF)2{Ph2P(BH3)N(2,6- i Pr2C6H6)}]2 (2) and [K(THF)2{Ph2P(BH3)N(2,6- i Pr2C6H6)}]2 (3). The sodium complex 2 was readily prepared by the reaction of sodium bis(trimethylsilyl)amide with 2,6-diisopropylanilidophosphine-borane ligand [2,6- i Pr2C6H3NHP(BH3)Ph2] (1-H) at ambient temperature. The potassium complex 3 was prepared by two synthetic routes: in the first method, the ligand 1-H was made to react with potassium hydride at room temperature to afford the corresponding potassium complex. The potassium bis(trimethylsilyl)amides were made to react with protic ligand 1-H in the second method to eliminate the volatile bis(trimethyl)silyl amine. Solid-state structures of both the new complexes were established by single crystal X-ray diffraction analysis. In the molecular structures of complexes 2, the sodium metal is coordinated by the anilido nitrogen (η 1) and borane group (η 1) attached to the phosphorus atom of ligand 1. In contrast, for compound 2, ligand 1 displays η 6 π-arene interaction from 2,6-diisopopylphenyl ring with potassium atom along with η 3 interaction of BH3 group due to larger ionic radius of potassium ion.

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IITH Creators:
IITH CreatorsORCiD
Panda, Tarun K
Item Type: Article
Additional Information: The instrumental facilities were provided by Indian Institute of Technology Hyderabad (IITH). KN and JB thank the University Grants Com- mission (UGC), India, AC thanks MHRD for PhD fellowships.
Uncontrolled Keywords: borane; phosphorus.; potassium; Sodium; π-arene interaction
Subjects: Chemistry
Divisions: Department of Chemistry
Depositing User: Team Library
Date Deposited: 13 Apr 2015 05:33
Last Modified: 07 Sep 2017 10:57
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